数理論理学セミナーのお知らせ

日時：10月4日(金)15:00から 場所：東京工業大学 大岡山西８号館 部屋未定 （参加者希望者はメールをください．部屋確定後に個別にお知らせします）

（１） 話者：Daniel Günzel （ダルムシュタット工科大） 題目：Logical Metatheorem: Background and practice 概要： A logical Metatheorem, due to Gerhardy-Kohlenbach, is introduced by presenting the main logical tools involved and showing some key aspects of the theory involved. After having done all the formal work, an application to a real world fixed point theorem (due to Fora) is given in several steps going to the formalization and modification process to finally obtain new constructive results.

（２） 話者：横山啓太（北陸先端科学技術大学院大） 題目：Ramsey's theorem, its iteration and their strength 概要： In this talk, I will introduce several versions of iterated Ramsey's theorem, and study the strength of them. I will also consider finite versions of iterated Ramsey's theorem, which are independent from Peano arithmetic. In fact, some of them are strictly stronger than the famous independent statement by Paris/Harrington.

------ 問い合わせ先：鹿島 亮（東京工業大学） [email protected]